@misc{indiciaec2c375547005,
  title = {Implementation of a hydrodynamic model for the upper Potomac Estuary},
  author = {Raymond W. Schaffranek and Robert A. Baltzer},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/70015505},
  note = {Source identifier: 70015505}
}